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Message-ID: <CAKL8G3FO7Js_qyj0-u=JRa5y_MR+iV6rzjbQVz43yfgcZ7DEgA@mail.gmail.com> Date: 2013-01-02T14:13:09Z From: Jorge I Velez Subject: column selection In-Reply-To: <BLU170-W1113B9706327D4F1C58297C89220@phx.gbl> An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20130103/ee874b3a/attachment-0001.pl>